High school biological reagents, such as alcohol, say different concentrations in their respective experiments, 3Q ~!

High school biological reagents, such as alcohol, say different concentrations in their respective experiments, 3Q ~!

1. Preparation of Fehling reagent: 1) the mass concentration of solution a is 0.1g/ml, 10 g NaOH is dissolved in distilled water and diluted to 100ml; 2) the mass concentration of solution B is 0.05g/ml, 5 g CuSO4 is dissolved in distilled water and diluted to 100ml; when used, the mixture of solution a and solution B is equal in quantity